| 摘要 |
PURPOSE:To continually obtain an adequate supercharge pressure and to improve fuel consumption or the like, by controlling a preset supercharge pressure on the basis of information of a car speed or a position of a transmission gear and an in-take pipe pressure or the like in addition to an engine speed and a throttle valve opening. CONSTITUTION:Each intake passage 14, 15 of an engine 11 respectively provides a small flow compressor 12 and a large flow compressor 13 to be arranged. While an exhaust passage 18 arranges in series a high pressure turbine 19 and a low pressure turbine 20 for driving each compressor 12, 13. Further each turbine 19, 20 provides a flow regulating valve 22 and a waste gat valve 24 respectively in bypass passages 21, 23. And a stepping motor 25 controls the flow regulating valve 22 to be opened and closed, further said motor 25 is controlled by a control unit 26. Here the unit 26 respectively inputs detection signals from an engine speed detector 27, car speed detector 28, throttle valve opening detector 30 and an air flow meter 31. |
